Buttonhole-finishing machine.



. 4 MAM. r bum C. H. T. HAGELSTEIN.

BUTTONHOLE FINISHING MACHINE.

APPLICATION FILED MAY 2a. 1913,

4 51,124,894 Patented Jan. 12, 1915.

Inventor.

- Christian HTHagglstin,

Wilnesses.

i iniiED-srrns mama-ew CHRISTIAN H. T. HAGELSTEIN, OF BOSTON, MASSACHUSETTS, ASSIGNOB T THE"REEGE BUTTON HOLE MACHINE COMPANY,- OF BOSTON, MASSACHUSETTS," A CORPORATION OF MAINE.

IBUTTONHOLE-FINISH ING MACHINE;

To allwhomitmay com-em.- .Be it known that I, CHRISTIAN HAeEns'rinN, a'citizen of the United States,

residing at Boston, county of Sufiolk, State of Massachusetts,

provement in. Buttonhole chines, of'which the following description,

. ing,

in connection with the accompanyihgdrawis a specification, like characters on the drawingrepresenting like parts.

This invention relates to sewing machines of that type that are usedfor finishing buttonholes. These machines commonly comhave invented an Im- Finishing Mar prise a bender for making bends in the similar to, that disclosedin my aforesaid patent.

I'wish to state, however,-that the features of the present invention are 'ap-' plicable to other types of sewing machine than that above referred to.

The object of the presentinvention 1s to 1 provide improvements 1n sewing machines of the above type, all as will be more fully hereinafter described and then pointed out in the appended claims.

Referring now to the drawings wherein I have illustrated the invention Figure 1 is a side View of a sewing machine such as is illustrated in my aforesaid Patent No. 1,009,408, having my improvements applied thereto. ldig. is a top plan view of the shuttle. Flg. 3 1s a section through the shuttle on the line ru -00, Fig. 2.

The machine shown in Fig. 1 and in connection with which have chosen to illustrate my improvements is similar in its principal features to the machine shown 111 my aforesaid Patent No. 1,009,408, and as the present improvements relate to detail features of the machine rather than to the 1 will not describe the entire organization, I

detail but will simply entire machine in i give a suflicient description thereof to enable any one derstand thepresent lmprovements.

Patent No. 1,009,408

a selected embodiment of' skilledvin the art to clearly unbend ported after Specification of Letters Patent: t t Jan 5 Applicationifiied ma 28,1913. Serial 110,770,317.

Themachine herein shown comprises the H. [Ti base framel from-which rises the overhanging arm-23 that-carries the presser foot and bender. mechanism and the operative parts. therefor.- The presser foot is shown at 25 audit-is depressed'b'y means of a lever 21' piyote'dat 22' to the arm 23,-.and acted upon by springs 24which" normally tend to'holdit elevated. The bender is shown at 37 v and it: is" actuated. from a rock shaft 61 carriedin "the overhangin arm by means of turn is operated from the main shaft 5, all, as illustrated in said Patent N'o. 1,009,408.

This bender 37 operates to intermittently" the work into a groove 48 formed in a throat plate 45. The stitching is performed, by the-usual eye-pointed needle 97 whichis reciprocated beneath the bed plate by any suitable mechanism acting in conjunction with the shuttle 120 that is sustained by a shuttle carrier 4tmounted on a verticalspindle 1:21 that 'is operated from the driving shaft by any usual mechanism, such, for

instance, as shown inmy prior PatentNo. 1,009,408. The parts thus far described are or maybe as illustrated in-said patent and form no part of my invention.

The driving shaft'5 is operated from a 8 by means of a clutch which is similar to that illustrated in U. S. patent to Reece No. 367,063 dated July 26, 1887.

The shuttle carrier 4 rotates in a block 61 loose pulley which is recessed to receive said shuttle carrier and which is secured to the bed frame 1 all asset'forth in said before-mentioned patent. This shuttle carrier is provided with the horn 7 which engages one end ofthe I shuttle and with the portion 8 that engages the other end of the shuttle, said portion 8 having an extended needle supporting portion 9-adjacent the hook 125, ofthe shuttle and on'which the point of the needle is supit has passed through the bend in the work and while the shuttle hook 125 entersthe loop of needle thread. This support 9 prevents any accidental displacement of the needle during the bending of the work i which might interfere with the proper function of the shuttle hook. In Fig. 3 the needle 97 is shown in dotted lines and the operation of'the support 9 will be readily apparent.

The shuttlethreadt is delivered from the s5 I a connecting; rod 58, that in tangled with the hook 125 of'the shuttle, If

. port which overlies the needle support 9 shuttle and extends in the direction shown in Fig. 3 toward the point where it leads into the work. T hlS shuttle thread is taken from a bobbin 50 which is loosely received in a recess formed in" the shuttle, the thread from. It sometimes. happens that during the rapidoperation of' themachine the bob-' bin will overrun thus giving up slack thread and if this occurs such slack thread is apt to get caught on' the point and become enthis occurs the thread is very likely, to become broken. In order toprevent this from happening I have provided a thread supandwhich extends" substantially to thepath in whichthe shuttle point 125 operates,said threadsupport operating to hold the shuttle thread 25 out of the path of the shuttle point 125 thus preventing. it'from becoming entangled with said point. Thisthread support isshown at 15 andis in the form of a plate or shelf which extfin ds parallel to the,"

shuttle: thread and operating'to revent the needle support 9, whic is situated above and is separated therefrom thereby present-- ing the throat 16 in which the point of the needle operates. This; thread support l5 may be sustained in any suitable way. I have herein shown the needle support -52 as "provided'with the miller portion 17 which may be integral therewith and on which the thread support 15 is secured. I may, if desired, make-the thread support 15, the wall 17 and the needlesupport 9 all integral with.

each other and integral with the shuttle carrier 4., The outer edge 18 of'the thread support is curved and follows thecurvature of the path of movement of the shuttle point 125, said edge 18 coming closely adjacent to the K said path of movement. The shuttle thread 25' will, therefore besupported clear. up to the path of movement of the'shuttle point and said thread cannot by any possibility become caught by or entangled in said shuttle point. a

40 is the usual cover plate that covers the shuttle carrier. The edge-"41 of this plate engages the undercut wall 42 on the bed plate and the cover isheld'in place by a locking member 45 mounted on a stud 46 which has secured thereto a handle 56 extendingthrough a slot.57 inthe machine frame. The locking head -45 is slabbed ofl. at 49 so that when the handleis turned into the dotted line position Fig. 4, the cover plate is unlocked. When the handle is in :the full line position, however, the cover 1 plate islocked in position by the portion 43 overlapping'the edge ofthe cover plate.

with a throat plate having a bending groove,

of a bender cooperating with said groove, :1

horizontally reciprocating needle, an oscillatoryshuttle carrier provided with a needle support, a shuttle sustained by said shuttle carrier and-provided with a shuttle hook and a shuttle-thread'support situated above the needle support and having its edge situated closely adjacentthe shuttle hook, said support constituting a. support for the latory shuttle carrier provided-with a needle support, a shuttlesustainedby said shuttle carrier and provided with a shuttle hook and a flat shuttle-thread support situated above the needle support and spaced therefrom and operating to prevent the shuttle thread from becoming entangled with the-point of the shuttle, 'said shuttle-thread support extending substantially to the path of movement of said shuttle hook. I

Intestimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses. v CHRISTIAN H. 'l. HAGELSTEIN.

Witnesses W. C. Bonvnur, I

FREDERICK W. DAVISON.

horizontally reciprocating needle, an oscil- 

